CN1108290C - Urea derivatives - Google Patents

Urea derivatives Download PDF

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CN1108290C
CN1108290C CN98118692A CN98118692A CN1108290C CN 1108290 C CN1108290 C CN 1108290C CN 98118692 A CN98118692 A CN 98118692A CN 98118692 A CN98118692 A CN 98118692A CN 1108290 C CN1108290 C CN 1108290C
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hydrogen atom
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CN1218044A (en
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D·贾瑟兰德
S·戴维
J·安特尔
R·布鲁克纳
C·艾克豪特
G-W·拜伦伯格
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Abbott Products GmbH
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Abstract

Compounds of Formula I wherein R1 is hydrogen or lower alkyl, R2 is hydrogen or halogen and R3 is hydrogen or lower alkoxy, and their pharmacologically acceptable acid addition salts and pharmaceutical compositions containing these compounds and also processes for the preparation of these compounds.

Description

New urea derivative
The present invention relates to new urea derivative, one of them nitrogen-atoms is the integral part of a piperazine ring, and another nitrogen-atoms is replaced by the benzylamino ethyl.Being characterized as of the urea derivative that these are new has neurokinin-acceptor-antagonistic properties, and it has the useful mode of action, can be in order to the functional and diseases associated with inflammation of treatment than large mammals, especially human gi-tract.The invention still further relates to medicine that contains these new compounds and the method for preparing these compounds in addition.
The objective of the invention is, develop new active substance in order to treatment gastrointestinal function and diseases associated with inflammation.
Known by European patent application publication No. 655442, bridged piperazine derivatives has neurokinin-antagonistic properties.
Have now found that, one group of new bridged piperazine derivatives is arranged, replaced by the indyl methyl in its 2-position, and the nitrogen-atoms of 4-position is a part that has the substituent urea skeleton of benzylamino ethyl on its piperazine ring, and then the mode of action that they had makes it to be suitable for treating the functional and diseases associated with inflammation of gastrointestinal tract disease.Another feature of material group of the present invention is good tolerability and good oral bioavailability.
So the medicine of purpose of the present invention for new compound shown in the formula I, its physiological tolerance acid salt being provided and can preparing by these compounds,
Figure C9811869200061
R wherein 1Be hydrogen atom or low alkyl group, R 2Be hydrogen atom or halogen and R 3Be hydrogen atom or lower alkoxy.
If in the formula I compound substituting group for or contain low alkyl group, then the latter can be straight or branched, and contains 1 to 4, preferred 1 to 2 carbon atom.
If R 1Be low alkyl group, then preferable methyl.
If substituent R 2Be halogen, then preferred fluorine.
If substituent R 3Be lower alkoxy, then preferred methoxyl group.
Preferred R 2Be hydrogen atom and R 3Be the formula I compound of methoxyl group, perhaps preferred R 2Be fluorine and R 3Formula I compound for hydrogen.
1H-indol-3-yl-methyl is preferably placed at the 2R-position of piperazine ring.
Can prepare these compounds according to known method itself.Preparation I compound is especially favourable in accordance with the following methods, wherein
A) with formula II compound
Figure C9811869200071
With the reactive carbonyl compound reaction of general formula III,
Figure C9811869200081
Wherein Y is that the nucleophilicity that can pass through primary amine or secondary amine is attacked and replaced leavings group, and reaction generates the carbamoyl compounds of general formula I V,
Wherein Y has above-mentioned implication, if by dividing leavings group Y by the formula IV compound that is obtained, can generate a kind of acid, adds a kind of non-nucleophilicity organic bases to formula IV compound, then with formula IV compound and the reaction of general formula V compound,
R wherein 101Be low alkyl group or an amino protecting group, R 2And R 3Have above-mentioned implication, and the protecting group R that then may occur 101Once more the division or
B) with formula II compound and the reaction of general formula VI compound,
R wherein 101, R 2And R 3Has above-mentioned implication, then the protecting group R that may occur 101Division once more,
Randomly with the R that is obtained 1Be the formula I alkylation of hydrogen atom, generate R 1Be the formula I compound of low alkyl group, and randomly the formula I compound that is obtained changed into its acid salt, perhaps acid salt is changed into free formula I compound.
Comparatively suitable is; work-around solution according to method a) at first reacts the reactive carbonyl compound of formula II compound and formula III; transform formamyl-compound of accepted way of doing sth IV, the amine that the latter can directly on-the-spotly, optional add behind a kind of non-nucleophilicity organic bases with formula V reacts.As the leavings group Y in the formula III compound, suitable have a for example halogen, preferred chlorine, and three halogen methoxyl groups, preferred trichlorine methoxyl group perhaps also can be an imidazolyl.Can use phosgene, two-(trichloromethyl)-carbonate (triphosgene), chlorine formic acid-trichloromethyl ester (two phosgene) or carbonyl dimidazoles as the reactive carbonyl compound of formula III.When the formamyl of the amine of formula V and formula IV-compound transformed, leavings group Y was fallen by replaced in the formula IV compound.If by generating a kind of acid at this free group Y that discharges, then comparatively suitable is before transforming with formula V compound, to add a kind of non-nucleophilicity organic bases in formula IV compound.If Y for example is a chlorine, then can be by add the chlorine hydracid constraint that above-mentioned alkali will produce when Y divides.As non-nucleophilicity alkali, be suitable in the reaction mixture solubility organic bases such as tertiary nitrogen alkali being arranged, the alkylating heterocycle of for example nitrogenous N-such as N-low alkyl group-morpholine or N-low alkyl group-piperidines or uncle's formula low-grade alkylamine and pyridine, for example triethylamine, tripropyl amine diisopropyl ethyl amine, pyridine, 4-dimethylaminopyridine, 4-diethyl amino yl pyridines or 4-pyrrolidyl pyridine.The alkali of excessive adding also can be used as solvent and uses.Reaction sequence can be used as single jar and is reflected in the polar protic inert solvent, as in partially halogenated lower hydrocarbon such as methylene dichloride ,-20 ℃ to the temperature between the room temperature, preferably at room temperature carry out.
The conversion of formula II compound and formula VI isocyanate can be according to the work-around solution b of method) carry out in a manner known way.Formula VI compound can be for example generated by transforming with suitable reactive carbonyl compound by the amine of formula V.As reactive carbonyl compound, suitable have a for example formula III compound.Suitable is, at first by the isocyanic ester of the amine preparation formula VI of formula V, then with it directly and formula II compound situ conversion.Can above-mentioned according to method a) preparation I compound finish reaction with single jar of reaction under the given condition.Suitable is to add a kind of sour reagent of tiing up to reaction mixture.As tie up sour reagent suitable above-mentioned non-nucleophilicity alkali arranged.
As amino protecting group, R 101Can consider for example known amino protecting group of chemistry of peptides itself, they can be imported into according to known method itself, and then are divided.Suitable protecting group is for example by J.A.W.McOmie " protecting group in the organic chemistry " Plenum press, 1973 or T.W.Green and P.G.M.Wuts " protecting group in the organic synthesis ", and Wiley and Sons, 1991 are known.
For example suitable protecting group R 101Stable group in acid and alkaline environment is arranged, and they can be divided under the hydrogenolysis condition.What belong to this type of for example has phenyl elementary alkoxy carbonyl such as a benzyloxycarbonyl (below be abbreviated as CbO).As amino protecting group R 101Can the advantageous applications benzyloxycarbonyl, they can be according to known mode itself, and are for example cleaved by the hydrogenation katalysis under, with acquisition R 1Formula I compound for hydrogen atom.Can be in the inert organic solvents under the reaction conditions, as lower aliphatic ether for example in tetrahydrofuran (THF) (below be abbreviated as THF) or the diethyl ether or at low-level chain triacontanol for example in methyl alcohol or the ethanol or at organic acid for example in lower alphatic carboxylic acid such as the acetic acid or in the mixed solution at above-mentioned these solvents and the cracking of carrying out protecting group under the condition that is having hydrogenation catalyst to exist.As hydrogenation catalyst, suitable for example have noble metal catalyst as being stated from the palladium on the gac.Suitable is at room temperature to react.The hydrogen-pressure that is suitable for hydrogenation is between the 2-7 crust, is preferably between the 3-5 crust.
Can be with R 1For the formula I compound of hydrogen atom is converted into R according to known aminoalkyl group method itself 1Formula I compound for low alkyl group.This can be for example by with the reaction of lower aliphatic aldehydes such as formaldehyde, formula I compound is made standard reductive alkylation.Can under the common condition of amine standard reductive alkylation itself, for example under the condition of catalytic hydrogenation, transform.As hydrogenation catalyst, suitable have metal catalyst such as a Raney nickel.As solvent advantageous applications low-level chain triacontanol.Can be at above-mentioned amino protecting group R 101Carry out carrying out catalytic hydrogenation under the condition of hydrogenolysis scission reaction.
Another kind of alkylating method is, under the usual conditions of nucleophilicity substitution reaction, with R 1Be formula I compound and lower aliphatic alkyl halide such as the alkyl bromide or the alkiodide of hydrogen atom, the preferable methyl iodide, alkyl sulfuric ester or alkyl sulfonic ester transform.In polarity matter in inert solvent such as dimethyl formamide (below be abbreviated as DMF), dimethyl sulfoxide (DMSO) (below be abbreviated as DMSO) or acetonitrile, between-20 ℃ to 100 ℃, under the temperature between preferred 60 ℃ to 90 ℃ and tie up in application under the condition of sour reagent and carry out this reaction.As tie up sour reagent suitable for example have above in formula IV compound and the conversion of formula V compound specified organic bases.
Have as the physiological tolerance salt of formula I compound is admissible, itself and mineral acid be the salt of sulfuric acid, phosphoric acid or haloid acid, preferred spirit of salt for example, perhaps with organic acid for example lower aliphatic single-, two-or the salt of tricarboxylic acid such as toxilic acid, fumaric acid, lactic acid, tartrate, citric acid, perhaps with the sulfonic acid for example Phenylsulfonic acid that replaced by halogen or low alkyl group of low alkyl group sulfonic acid such as methanesulfonic or optional its phenyl ring such as the salt of tosic acid.
Can be according to known method itself, by reaction mixture with formula I compound separation and purification.Can acid salt be changed into free alkali according to common mode, and the acid salt that in known manner free alkali is changed into the pharmacology tolerance in case of necessity.
Formula I compound contains a chiral carbon atom, and the carbon atom that promptly has 1H-indol-3-yl-methyl residue is positioned on the 2-position of piperazine basic skeleton.Therefore the form that formula I compound can multiple steric isomer exists.The present invention had both comprised the optical isomer intermixture of formula I compound, comprised its pure isomer again.In the preferred formula I compound, its indole methyl residue is positioned on the 2R-position of piperazine ring.
If the optical isomer intermixture of application formula II initial compounds in formula I compound synthetic, then gained formula I compound is the form of optical isomer intermixture.Set out by initial compounds simple on the stereochemistry, also can obtain formula I compound simple on the stereochemistry, for example by separating in the enterprising circumstances in which people get things ready for a trip spectrum of chiral separation material, perhaps, then in optically active enantiomorph, separate by fractionation crystallization gained diastereoisomeric salt by sour as tartrate or amphene-10-sulfonic acid conversion with suitable optical activity.
Two kinds of enantiomorphs of formula II compound are known by EP-A655422, also can be according to the method or the preparation of method similarly of present patent application explanation.
The amine of formula V can be obtained by the diamino compounds of the formula VII of dual amido protecting,
R wherein 101, R 2And R 3Has above-mentioned implication, R 401Be an amino protecting group, this method is in known manner, divides amino protecting group R by formula VII compound selective ground 401
As amino protecting group R 401, suitable for example generally have by the known amino protecting group of chemistry of peptides, as by above-mentioned source known those.For example, as amino protecting group, R 401In medium at least sour environment, for example by adding tosic acid, trifluoroacetic acid or gasiform or be dissolved in hydrochloric acid in the solvent, splitted group optionally, they are to hydrogenolysis more stable with condition alkalescence.The elementary alkoxy carbonyl that also has side chain for example such as the uncle-butoxy carbonyl (below be abbreviated as BOC) that belong to this type of.R 401Can be preferably uncle-butoxy carbonyl.
Formula VII compound can obtain according to known mode itself, for example passes through the acid amides of reduction general formula VIII,
R wherein 1, R 2, R 3And R 401Have above implication, and, if R 1Be hydrogen atom, then then import a protecting group R 101Reduction reaction can be carried out as reductive agent with compound alkalimetal hydride such as lithium aluminium hydride.Suitable having is organic solvent inert such as lower aliphatic ether, for example mixture of diox, THF or diethyl ether or these solvents under reaction conditions as solvent.Suitable temperature range at-20 ℃ between the boiling temperature of reaction mixture.Preferably at room temperature carry out reduction reaction.
Also can be by aminoacylization, forming the common method of acid amides marshalling (Amidgruppierungen), by with protected omega-amino-carboxylic acid general formula I X, amino, R wherein 401Have above implication, with the amine generation conversion reaction of general formula X,
Figure C9811869200132
R wherein 1, R 2, and R 3Has above implication, the acid amides of preparation formula VIII.As acylating agent, can use acid or its reactive derivatives of formula IX.As reactive derivatives, especially consider the acid of formula IX and chlorine formic acid or with the organic sulfonic acid mixed acid anhydride and acyl chlorides or acylbromide or the mixed ester that form as the Phenylsulfonic acid that replaced by low alkyl group or halogen such as tosic acid of aromatic sulphonic acid for example.Can be in the inert organic solvents under the reaction conditions, at-20 ℃ between the temperature of room temperature, preferably at room temperature carry out acylations.As solvent, the suitable mixture that aromatic hydrocarbon such as benzene or toluene, aliphatic ether such as Anaesthetie Ether, THF Huo diox, partially halogenated lower hydrocarbon such as methylene dichloride or these solvents are arranged.
Suitable is, especially when the carboxylic acid halides of application formula IX acid during as acylating agent, carries out acylations tiing up in the presence of the sour reagent.As tie up sour reagent suitable above-mentioned formamyl-compound and formula V compound specified non-nucleophilicity organic bases when transforming at formula IV arranged.
If the acid itself of using formula IX is as acylating agent, then comparatively suitable is, is suitable in by chemistry of peptides under the condition that known coupling reagent that acid amides generates exists, carries out the conversion reaction of the acid of the amine of formula X and formula IX.As the coupling reagent that promotes as above to generate acid amides with free acid, be they and sour real-world effectiveness, the formation reaction acid derivative, that especially can give an example has: the alkyl carbodiimide, cycloalkyl carbodiimide such as dicyclohexyl carbodiimide or 1-ethyl-3-[(dimethylamino for example)-propyl group]-carbodiimide, di-isopropyl carbodiimide, and carbonyl dimidazoles.Under the temperature between-30 ℃ to+50 ℃, solvent such as halohydrocarbon and/or aromatic solvent as the optional benzene that replaces in, and choose wantonly under the condition that a kind of non-as previously described nucleophilicity nitrogen base of organic compound example of tiing up acid exists, have that to carry out conversion reaction under the condition of coupling reagent comparatively suitable.The acid of formula IX is the amino protected derivative of 2-aminobenzoic acid derivative, known its unprotected form, and can be converted to derivative amino protected according to known method itself.
The compound of formula X is known, perhaps can be prepared by compound known according to known mode itself.
Formula I compound and acid salt thereof have neurokinin (=NK)-characteristic of acceptor-antagonism, be suitable for treating neurokinin participates in morbidity as carrier morbid state.At this, being characterized as of The compounds of this invention has especially favourable selectively acting mode, it is characterized by the affinity that the NK-1-acceptor is had height, and relatively, the NK-2-acceptor had rudimentary affinity.These compounds have good oral action effect in addition.
Based on its mode of action, material group of the present invention is particularly suitable for suppressing those processes that neurokinin such as Substance P participated in conjunction with the NK-1-acceptor.So these matter selective ground are suitable for treating the morbid state that those Substance Ps participate in.Substance P for example works in pain conduction, vomiting, neurogenic inflammation, bladder inflammation, struvite joint disease and asthma.Because it works to gi tract in an advantageous manner, the mode of action of such material is suitable for treating GI functional and diseases associated with inflammation.Prove that in addition these compounds also have certain affinity except that the NK-1-acceptor is had than the high-affinity to the NK-2-acceptor, it is generally acknowledged that these two kinds effect compositions possess favourable synergy to the mechanism that participates in same signs of disease.The functional disease that belongs to the treatment of available The compounds of this invention has, especially so-called " irritable bowel syndrome " (=IBS) or stimulate enteron aisle syndrome, be known disease of lower digestive tract.The IBS The main symptoms is the pleoergy that hypogastralgia, its reason appear as the internal organ afferent nervous system, and stool abnormity, and especially the colonic stool is accelerated by unusual.Because the visceral pain susceptibility to mechanicalness in the gi tract and chemical irritation improves, even caused colon is slightly expanded in the physiological digestive process, for example a small amount of gas produces and slight bulging, does not almost have sensation the normal people, the promptly existing violent visceral pain of patient IBS.The compounds of this invention can advantageously influence some gastrointestinal tract inflammation disease, and the disease that belongs to this type of has, and generally is referred to as diseases associated with inflammation and the ulcerative colitis and the CrohnShi disease of small intestine and the large intestine of IBD (=inflammatory bowel syndrome).The mode of action of these materials is characterized as good biological usability and has the favourable selectivity of neurokinin-acceptor-antagonistic action for undesirable side effect.Determine not have cardiovascular calcium antagonism in the pharmacology test that in the dosage range of retardance NK-1-acceptor, is carried out.
Relate to the preparation embodiment that illustrates later given embodiment number.
Explanation about the pharmacology test method
1. in vitro measure the binding ability of tested object confrontation NK-1-acceptor.
In vitro measure the verify affinity of human NK-1-acceptor of tested object.Mensuration is combined in restraining effect on the NK-1-acceptor to physiological neurokinin (Substance P).
With [ 3H]-Substance P carries out acceptor-combination as ligand to be tested.In order to carry out the combination test, the CHO-cell (ovum of=Chinese hamster with various samples, chinese hamsteroocytes) film smear, they can test human NK-1-acceptor, solvent with tagged-ligand is hatched, and hatches throw out and does not contain the additive of tested material or the various concentration of tested material at this.Then in sample, respectively bonded is separated with the free ligand by means of glass fibre-filtration method.Remaining fraction in the filtrate repeatedly with the buffer reagent washing, is then measured the radioactivity of residue fraction in the filtrate with β-scintillometer.Measure the IC of corresponding concentration as corresponding tested material 50, the bonded ligand is squeezed to greatest extent by 50% under this concentration.Numerical value can calculate the corresponding inhibition constant (K of tested material thus i-value).In this test model, the material of embodiment 1 is to the K of human NK-1-receptor affinity i-be worth and be 2.1nmol/l.
2. in vitro measure the binding ability of tested object confrontation NK-2-acceptor.
Measure the verify affinity of human NK-2-acceptor of tested object in vitro.Mensuration is to compound S R-48, and 968 are combined in the restraining effect on the NK-2-acceptor.SR-48, the 968th, a kind of compound of synthetic preparation is known specificity NK-2-antagonist.
Use SR-48,968 carry out acceptor-combination as ligand tests.The method of bonding force of in vitro measuring tested object confrontation NK-1-acceptor in working method and the pharmacology test of test is similar.Difference is, uses the film smear sample of various CHO-cells here human NK-2-acceptor is tested.In this test model, below tabulation lattice 1 are enumerated the K of embodiment material to human NK-2-receptor affinity i-value.Table 1: the verify affinity of human NK-2-acceptor of tested object
Embodiment number K i[μmol/l]
1 2 3 0.06 0.05 0.30
3. in vitro measure the functional NK-1-antagonistic action of tested object confrontation guinea pig in vitro tissue
On the white cavy aortic annulus of the stripped Pirbright-sample in maintaining chemotrophy liquid, in vitro measure the NK-1-acceptor-antagonistic action of tested material.Measure the tested object confrontation excites the aorta sample tension force sexual relaxation of back appearance with NK-1-synergist Substance P restraining effect.
In order to measure the contraction of blood vessel flesh, sample is fixed on the hook, link with single line and force measurement device, contraction each time all is recorded on the register.Make the aorta sample anxiety with the phenyl ephedrine.Then before adding detection material and excite the NK-1-acceptor of sample afterwards with 0.01 μ mol Substance P, cause that tensile relaxes.To add before the detection material and relaxing afterwards represented with percentage ratio respectively.Calculate and produce 50% maximum the concentration (=IC that suppresses 50) as character numerical value, it shows 50% concentration when suppressing tension force to greatest extent and relaxing.
In this test model, below tabulation lattice 2 are enumerated the IC of embodiment material generation during 50% maximum the inhibition 50-value.
Table 2: the functional NK-1-antagonistic action of the stripped cavy tissue of tested object confrontation
Embodiment number IC 50[μmol/l]
1 2 3 0.001 0.0012 0.0015
4. in vitro measure the material-P-antagonistic action of tested material
As the standard test pattern of measuring the pharmacological effect that material-P brings out,, verify the material-P-antagonistic action of tested material by with the caused cavy ypotension of material-P medication.Intravenously (=i.v.) and in the duodenum (=i.d.) with after the tested material medication, measure the restraining effect of the caused blood pressure drops of tested object confrontation Substance P.
To male guinea pig under anesthesia, conduit is inserted in the arteria carotis communis respectively and jugular vein in.Ductus arteriosus is in order to measure blood pressure.Measure with Si Tesemushi 23d/B pressure susceptor.By venous access injected material P and tested material.After 20 minutes balance period, Substance P is annotated with the dosage intravenously group of 50pmol/ animal.Inject tested material then.In the process of the test of intravenously medication, the intravenously dosage of tested material is one group of per 4 to 6 animal of 0.1,0.46 and 1.0 μ mol/kg.The control group physiological saline of corresponding dosage.Inject tested material after 1,15,30,45 and 60 minutes, inject the 50pmol Substance P respectively.Be to be attached to the interior conduit that inserts of duodenum of experimental animal in the test of duodenum innerlich anwenden with above test difference.Tested material passes through catheter drug delivery with the dosage of per 3 to 6 animals 0.046,0.1,0.46,1.0,4.6 and 10.0 μ mol/kg.In these trials, tylose is as vehicle.Measure mean arterial pressure in about 1 minute before material-P medication first and after the medication, and measure the caused maximum blood pressure drops of material-P thus.After 60 minutes, the mean arterial pressure of the control animals of the private Substance P of competitive list treatment and the animal treated with Substance P and tested material, and difference calculates corresponding tested dosages of substance to the restraining effect that maximum blood pressure drops produced that material-P brings out thus, represents with percentage ratio.Corresponding dosage when measuring the blood pressure drops that 50% ground inhibitory substance P brings out is as ED 50
In this test model, the ED of embodiment 1 material after the intravenously medication 50Value is 0.2 μ mol/kg, the ED behind the duodenum innerlich anwenden 50Value is 0.08 μ mol/kg.This i.d. effect can be used as index to the ratio of i.v. effect, and in order to illustrate: this material is suitable for oral medication well, and it preferably plays a role in duodenum.
In same test model, detected the effect of tested object confrontation based on the blood pressure drops of calcium antagonistic properties.In this control animals is with tested material medication, and does not give material-P.Embodiment 1 material (i.v. dosage 1 μ mol/kg, i.d. dosage 10 μ mol/kg) at the most at the most in the dosage range that detects does not have tangible blood pressure drops.This index explanation does not have the side effect of calcium antagonism in this dosage range.The side effect of this amazing small calcium antagonism of The compounds of this invention also can be by invisible spectro standard test pattern, for example the isolated aorta tissue cavy is confirmed.
These materials also can be with common pharmaceutical dosage forms medication.Can there be individual difference in applied dosage, according to different the variation to some extent naturally with institute's applied material of the difference of institute's therapeutic state.In general, be suitable for the mankind and be 0.1 to 80mg activity substance content, especially 1 to 10mg/ single dosage than the drug dose of large mammals medication.
The compounds of this invention can be prepared into solid-state or liquid medicine type with common pharmacopedics adjuvant and/or carrier substance.Solid formulation for example can be oral medication preparation such as tablet, dragee, capsule, pulvis or granula, perhaps also can be suppository.These pharmaceutical preparations can contain commonly used inorganic of pharmacopedics or/and the organic carrier material, and for example talcum powder, lactose or starch can contain pharmacopedics adjuvant commonly used, for example lubricant or tablet disintegrant in addition.The suspension of liquid formulation such as active substance or emulsion can contain thinner commonly used, Ru Shui, oil and/or suspension agent such as polyoxyethylene glycol and similar substance.Other adjuvant be can also add, agent, correctives and class commaterial for example preserved.
Active substance can mix according to known mode own with pharmacopedics adjuvant and/or carrier substance or prepare mutually.In order to prepare solid pharmaceutical dosage forms, for example active substance can be mixed in common mode mutually with adjuvant and/or carrier substance, make granula wet or that do then.Granula or pulvis directly filling become capsule, perhaps are pressed into the tablet ball in common mode.These can make dragee in common mode where necessary.
Following examples can further specify the present invention, but its scope is not limited only to this.
Embodiment 1:(2R)-and 1-[3, two (trifluoromethyl) benzoyls of 5-]-2-(1H-indol-3-yl-methyl-)-4-{2-[N-(2-methoxy-benzyl) amino-ethyl] aminocarboxyl } piperazine
A) uncle 101.5g-butoxy carbonyl glycine is dissolved in the 800ml methylene dichloride under nitrogen atmosphere, and mixes with the 96.5ml triethylamine.Ice-cold slow Dropwise 5 8ml chlorine formic acid ethyl down stirred formed mixture 2 hours under the room temperature, then dripped the solution of 79.8g2-methoxy-benzyl amine in the 400ml methylene dichloride then.Stirred overnight is added 1400ml 15% water-soluble tartaric acid solution then, and was stirred again 30 minutes.Follow with the organic phase separation, through dried over sodium sulfate and vapourisation under reduced pressure.With residuum by diethyl ether/methylene dichloride crystallization and dry in a vacuum.Getting 88.9gN-BOC-C-(2-methoxyl group)-benzylamino glycine is white meal, Fp. (fusing point)=97-97.7 ℃.
B) the above-mentioned products therefrom of 40.0g is dissolved under nitrogen atmosphere in the mixed solution of 600ml toluene and THF (1: 1), and drops to ice-cold 21.0g LiAlH 4In the solution in 500ml THF.Mix liquid under the room temperature and spend the night, ice-cooledly dripping down the mixed solution of 20ml water and 150mlTHF in order, then at room temperature at first adding 20ml 15% water-soluble sodium hydroxide solution then.60ml water then.The solution that forms inhaled from the throw out that generates go and the filtrate vapourisation under reduced pressure.Residuum is absorbed in the 240ml 7.5% water-soluble tartaric acid solution, with the water dichloromethane extraction.Then water is passed through to add the water-soluble sodium hydroxide solution of 200ml10%, make its pH=10, use dichloromethane extraction then 3 times.The methylene dichloride that merges is dry in dried over sodium sulfate, vapourisation under reduced pressure and vacuum.Get 28.0g oiliness N-BOC-N '-(2-methoxyl group)-benzyl-1, it need not purified and can further transform.
C) the above products therefrom of 5.0g is dissolved among the 50mlTHF under nitrogen atmosphere.Add the water-soluble sodium hydroxide solution of 20ml1N.Drip common 3.05g chlorine formic acid benzyl ester and the water-soluble sodium hydroxide solution of 1N simultaneously to formed reaction mixture under ice-cooled, make its pH value be not less than 10.Add to finish to stir under the room temperature of back and spend the night.Then add 150ml methyl-tert-butyl ether, water phase separated, then in order 2 times with 50ml water, 1 time with 50ml 15% water-soluble tartaric acid solution and again 2 times with 50ml water washing organic phase.Organic phase is dry in dried over sodium sulfate, vapourisation under reduced pressure and vacuum then.Get 4.9gN-BOC-N '-(2-methoxyl group)-benzyl-N '-Cbo-1, the 2-diaminoethanes, it need not purified and can further transform.
D) the above products therefrom of 4.8g is dissolved in the 50ml methylene dichloride.Adding 4.4g tosic acid and stirring reaction mixed solution spends the night.Then add the solution of 7.5gNaOH in 75ml water.Organic phase is separated, with 75ml water washing 1 time with through dried over sodium sulfate.With solution vapourisation under reduced pressure and product is dry in a vacuum.Get 3.5g oiliness N-(2-methoxyl group)-benzyl-N-Cbo-1, the 2-diaminoethanes, it need not purified and can further transform.
E), two (trifluoromethyl) benzoyls of 5-with 2.0g (2R)-1-[3]-2-(1H-indol-3-yl-methyl)-piperazine is dissolved in the 100ml methylene dichloride.Successively add 0.6g triphosgene that is dissolved in the 20ml methylene dichloride and the 12.0ml diisopropylethylamine that is dissolved in the 20ml methylene dichloride.Stir formed mixture 1 hour under the room temperature, then drip the above gained aminocompound of 2.8g that is dissolved in the 20ml methylene dichloride.With reaction mixture restir 18 hours, then in order with 10% water-soluble potassium hydrogen sulfate solution, water with wash with saturated potassium bicarbonate solution again.Then methylene dichloride is evaporated down through dried over sodium sulfate and decompression.With residuum process silica gel (eluent: methylene chloride 3: 1) chromatographic separation; get 2.5g oiliness (2R)-1-[3; two (trifluoromethyl) benzoyls of 5-]-2-(1H-indol-3-yl-methyl-)-4-{2-[N-(2-methoxy-benzyl)-N-Cbo-amino-ethyl] aminocarboxyl } piperazine, it need not purified and can further transform.
F) the above products therefrom of 2.5g is dissolved in the 400ml ethanol, and mixes with palladium catalyst that 0.5g 10% is stated from the gac.Then hydrogenation 6 hours under the hydrogen pressures of 4 crust.Elimination catalyzer and decompression are down with solvent evaporation.Process silica gel (eluent: methylene chloride 9: 1) chromatographic separation, get the 1.0g title compound, it is handled with the saturated diethyl ether of HCl-, change into hydrochloride, Fp.=138-140 ℃.
According to above explanation, can also prepare the formula I compound of enumerating in the following table 3: Table 3:Other compound of formula I
Embodiment number R 1 R 2 R 3
2 3 CH 3 H H F OCH 3 H
Example I:Contain (2R)-1-[3, two (trifluoromethyl) benzoyls of 5-]-2-(1H-indol-3-yl-methyl-)-4-{2-[N-(2-methoxy-benzyl) amino-ethyl]-aminocarboxyl } tablet of piperazine
Contain following composition according to each tablet and prepare tablet: (2R)-1-[3, two (trifluoromethyl) benzoyls of 5-]-2-(1H-indol-3-yl-methyl-)-4-{2-[N-(2-methoxy-benzyl) amino-ethyl]-aminocarboxyl } piperazine-hydrochloride 20mg W-Gum 60mg lactose 135mg gelatin (being 10% solution) 6mg
Active substance, W-Gum and lactose and 10% gelatin solution are concentrated.Paste is ground, formed granula is placed on the suitable sheet metal, dry down at 45 ℃.By pulverizer, mix with following other adjuvant in mixing machine then: talcum powder 5mg Magnesium Stearate 5mg W-Gum 9mg is pressed into the tablet of 240mg then with the exsiccant granula.

Claims (4)

1. compound of Formula I and physiological tolerance acid salt thereof
Wherein
R 1Be hydrogen atom or C 1-C 4Alkyl,
R 2For hydrogen atom or halogen and
R 3Be hydrogen atom or C 1-C 4Alkoxyl group.
2. according to (the 2R)-1-[3 of claim 1, two (trifluoromethyl) benzoyls of 5-]-2-(1H-indol-3-yl-methyl-)-4-{2-[N-(2-methoxy-benzyl) amino-ethyl]-aminocarboxyl } piperazine and physiological tolerance acid salt thereof.
3. contain according to the pharmacological action dosage of claim 1 compound and the pharmacopedics adjuvant commonly used and/or the medicine of carrier substance.
4. the method for preparing compound of Formula I and physiological tolerance acid salt thereof,
Figure C9811869200031
Wherein
R 1Be hydrogen atom or C 1-C 4Alkyl,
R 2For hydrogen atom or halogen and
R 3Be hydrogen atom or C 1-C 4Alkoxyl group
It is characterized by,
A) with formula II compound
With the reactive carbonyl compound reaction of general formula III,
Wherein Y is a replaced leavings group of nucleophilicity attack that can pass through primary amine or secondary amine, generates formamyl-compound of general formula I V,
Figure C9811869200041
Wherein Y has above-mentioned implication, if can generate a kind of acid by splitting leavings group Y by the formula IV compound that is obtained, adds a kind of non-nucleophilicity organic bases to the formula IV compound that obtains, then with formula IV compound and the reaction of general formula V compound,
Figure C9811869200042
R wherein 101Be C 1-C 4Alkyl or an amino protecting group, R 2And R 3Have above-mentioned implication, and the protecting group R that then may occur 101Once more cracking or
B) with formula II compound and the reaction of general formula VI compound,
Figure C9811869200043
R wherein 101, R 2And R 3Has above-mentioned implication, then the protecting group R that may occur 101Cracking once more
Randomly with the R that is obtained 1Be the formula I alkylation of hydrogen atom, generate R 1Be C 1-C 4The formula I compound of alkyl, and randomly the formula I compound that is obtained is changed into its physiological tolerance acid salt, perhaps the physiological tolerance acid salt is changed into free formula I compound.
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